, from washington up through philly, new york and boston. this is just one of the many scenes on american highways tonight. this is i-83 outside of harrisburg. where several cars collided in the snow. several people were taken to the the hospital. already this evening the flight cancellations are growing, more than 450 and counting. at this hour, triggering a ripple effect as people travel for new year's. so, we begin tonight with abc meteorologist ginger zee. ginger, good evening. >> good evening, david. blustery here. more snow just west of us. 2 or 6 inches of snow, that's on top where they already saw record numbers this week. as millions of us return from family gatherings, or take off for new festivities, another snowstorm is thwarting our trek. in king of prussia, they were sliding through intersections. on a fresh few inches. near harrisburg, pennsylvania, two tractor-trailers crashed. shutting down interstate 83. slowing traffic to a crawl. thanks to the snowing mess, the speed limit on about 300 miles of the pennsylvania turnpike was shaved to 45 miles per hour. hundreds of flig
